Home / 77,811.84-115,977.51-73,382.76

Finding the Fourth Proportional to 77,811.84, 115,977.51 and 73,382.76

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Solution

The fourth proportional to 77,811.84, 115,977.51 and 73,382.76 is: 109,376.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,811.84 : 115,977.51 = 73,382.76 : x
  2. Step 2: Convert to fraction form
    77,811.84/115,977.51 = 73,382.76/x
  3. Step 3: Cross multiply
    77,811.84x = 115,977.51 × 73,382.76
  4. Step 4: Simplify right side
    77,811.84x = 8,510,749,781.73
  5. Step 5: Solve for x
    x = 8,510,749,781.73/77,811.84
  6. Step 6: Final answer
    x = 109,376.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.